| 天然杜仲橡胶的有机相-水相提取及其结构表征 |
| The organic phase-aqueous phase extraction and properties of natural ecommia ulmoides gum |
| 投稿时间：2015-03-09 修订日期：2015-03-09 |
| DOI： |
| 中文关键词: 天然杜仲橡胶 有机相-水相 提取 结构 |
| 英文关键词: eucommia ulmoides gum the aqueous phase and orgnic phase extraction molecular structure |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目）;国家教育部博士点基金 |
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| 中文摘要: |
| 本文主要介绍快捷、高效、绿色的天然杜仲橡胶有机相-水相提取方法,该方法可简化天然杜仲橡胶提取工艺,改善传统提取工艺中存在的有机溶剂消耗大,杜仲橡胶析出依赖反相容剂等问题；采用有机溶剂与水相结合的方法得到较纯净的天然杜仲橡胶并对提取物进行表征,结果发现天然杜仲橡胶中反-1,4-结构含量为99%以上,几乎不含有1,2-结构单元和顺式-1,4-结构单元；天然杜仲橡胶有一定的结晶性且晶型单一；酶解处理后的天然杜仲橡胶的分子量在30-40万,分子量分布相对较宽。 |
| 英文摘要: |
| The paper exploited a fast, efficient, green extraction method of Natural Ecommia ulmoides gum. This method could simplify the extraction process of Eucommia ulmoides and solve many problems in traditional methods, such as the great amount of organic solvant used in the process and the reversed-phase solvent needed to separate Eucommia gum solid from solution.It can also save the extraction cost. In the experiment ,petroleum ether solution , chloroform solution and hot and cold water were used to extract Natural Ecommia ulmoides gum .The extracted Ecommia ulmoides gum was characterized and the result showed that the content of trans-1, 4 -structure reached as high as 99% almost without 1,2-structure and 3,4-structure.What’s more Eucommia ulmoides gumScan crystallize with Single crystal type and the molecular weight of Eucommia ulmoides pretreated by mechanical method was about 30 KDa and relatively narrow polydispersity. |
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